but there's been no activity since monday, when president obama warned the syrians about using chemical weapons. >>> new video of army tanks moving in to stop the violence that has erupted outside the presidential palace in cairo. thousands you see here, protesting president mohamed morsi, claiming he is trying to establish a dictatorship. >>> also this morning, software mogul john mcafee has been arrested in guatemala. police detained him for entering the country illegally. he's request asylum in guatemala, claiming he is being persecuted in belize, in questioning for his neighbor's murder there. >>> a lawsuit has changed the way we criticize others online. a virginia contractor has won a legal victory this morning, after suing a client for defamation. claiming her scathing reviews on the websites yelp and angieslist were not true. the judge ordered that she must remove her reviews. the lawyer calls it a violation of free speech. >>> here's diane sawyer with a preview of tonight's "world news." >> josh, good morning. and to everyone on "gma." it is day one. first time ever smoking mari